To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
We use these slip leads at my doggie daycare. They last years! They work well for keeping the dogs under control. They're just the right length and thickness. The five stars I gave for "stretch" is because they do NOT stretch, which is what you want when trying to control a dog. My only complaint, which is the nature of the material, is that if a dog is really pulling, the handle of the leash digs into your hand.